Automatic window closing device



Sept. 29, 1931. c. A. BALTZ, JR 1,825,043

AUTOMATIC WINDOW CLOSING DEVICE Fi led Dec. 15, 1930 INVENTOR.

TTORNEY.

Patented Sept. 29, 1931 CHARLES A. BALTZ, JR., OF RUXTON, MARYLAND AUTOMATIC WINDOW CLOSING DEVICE Application filed December 15, 1930. Serial No. 502,292. 7

This invention relates to a time operated window closing device which is entirely selfcontained, employs no ropes nor pulleys and requires no changes in standard window conjjstruction, being merely secured on the bottom of the window frame below the sill.

The invention consists of the novel construction and arrangement of the parts and combination of parts hereinafter more fully set forth in the following specification .and pointed out in detail in the appended claims.

In the accompanying drawings Figure 1 is a front elevation and a window showing my invention applied thereto.

Figure 2 is a side elevation of Figure 1.

Figure 3 is a detail enlarged View, partly in section, of the case in which the operative parts are enclosed.

Referring to the accompanying drawings, forming part of this section and in which like reference numerals designate like parts throughout the several views thereeof, 1 designates a case in which is enclosed the clock mechanism and operative parts; the said case 1 being adapted to slide in a base 2, which latter is rigidly secured to the window frame below the sill thereof. The said case 1 can be removed from the base 2 for the purpose of winding the clock mechanism from the rear. The brass or steel tape, chain or cable 3 passes through a hole in the top of the case 1 and connects with the window sash by means of a hook or ring 4 at the top of the sash, or it may also be hooked to the bottom of the sash, if desired, by means of a bracket (not shown) which would extend out far enough to give the connecting member a favorable angle of operation.

By referring to Figure 3 of the drawings, a clear understanding of the operation of the mechanism may be ascertained.

The barrel 5 encases aclock-type spring (not shown) which is attached in its center to a stationary shaft 7. The spool or drum 6 on which the tape 3 is wound is rigidly attached to the barrel 5 and rotates therewith. When the said spring is wound up by pulling out the tape 3, it is prevented from unwinding by the pawl 10, which latter engages the teeth oftheratchet wheel 8. The

said ratchet wheel is rigidly attached to a the gear-wheel 9, which in turn is geared to the gear-train 11, which steps up the speed. The wheels 8 and 9 are free to rotate on the stationary shaft 7. An air vane 12 is mounted on the last member of the gear-train, the purpose of same being to check the speed of the unwinding spring to a point where no noise will be produced when closing the 2 window. A fly-ball or other type of governor can as well be: employed. The rod 13 is connected by a fork to the shifting alarm release gear of a standard alarm clock 14. When the alarm gear shifts the rod 13 disengages the vane or governor 12 thus allowing it to rotate and the tape 3 winds in, thereby pulling the window down slowly and silently. I also desire to incorporate a means for releasing the vane 12 by hand when it is desired to roll the tape 3 into the case 1 out of the way. This may be accomplished by a small knob 15 on the outside of the case 1, connected by a rod 16 to the rod 13, so that'when the knob 15 is pulled forward the rod 13 will be pulled out of engagement with the vane 12.

Having thus described my invention what I claim is i '1. The combination with a window sash and frame ofa device for closing the window comprising a base rigidly secured to said frame, a case removably fitted in said base, a drum revolubly mounted in said case, a spring within said drum for actuating the latter, a tape or cable wound upon said drum and adapted-to be secured at one end to the window sash, means for holding the drum against the action of the spring therein and means for automatically releasing the drum to allow the tape or cable to be wound thereon and close the window.

as i

2. The combination with a window sash vlatter, a tape or cable wound upon said rum and adapted to be secured at one end to the "window sash, means for holding the drum against the action of the spring therein, means for automatically releasing the drum 7 to allow the tape or cable to be wound thereon and close the window, and manual means for operating the automatic releasing means.

In testimnny whereof Iaflixmysi h tnre. 01-111mm Jags 53". i it: 

